Nothing is a waste of time if you use the experience wisely.
如果你明智地利用经验,那么没有什么是浪费时间。
预测未来的最好方法就是去创造未来。
Responsible forestry isn't about limiting progress—it's about redefining what progress means.
真相如同太阳,永远无法被云层长久遮蔽。
Every mathematical problem is a puzzle waiting to be solved, and every solution is a step towards greater understanding.